Screen plate support



June 4, 1935. G. cLAUsEN 2,003,923

\ SCREEN PLATE SUPPORT Filed Nov. 1. 1934 ATTORNEY UNITED STATES PATENT OFFICE SCREEN PLATE SUPPORT George Clausen,

Longview, Wash.

Application November 1, 1934, Serial No.750,975

6 Claims.

This invention relates to screen supports or screens employed in paper pulp mills and the like, and particularly to an improved support which facilitates the assembling and prolongs the life of the screens.

The screens employed in handling paper pulp are large foraminous plates which aresupported in the vat by bars, usually of hard wood. Heretofore, the edges of the screen plates have been secured to the bars by metal strips fastened by bolts or screws. The structure, which is subjected to the action of the liquid passing the screens, has a relatively short life, and repairsV and replacements for maintenance materially increase the cost of operation.

It is the object` of the present invention to afford a stronger and more sturdy structure which is readily assembled and prolongs the life of the plant whether originally installed or used as a replacement for the devices heretofore in use.

Other objects and advantages of the invention will be apparent as it is better undersood by reference to the following specication and accompanying drawing, in which Fig. 1 is a side elevation of the improved screen support; and

Fig. 2 is a section on the line 2-2 of Fig. 1.

Referring to the drawing, the side walls 5 indicate a tank or vat in which the screen is supported. A plurality of bars 6 of hard wood or other suitable material extend between the walls 5 at spaced intervals. 'I'he number of such bars will depend upon the area of the screen, which consists of a plurality of formaminous plates I of bronze, brass, or other suitable metal adapted to withstand the corrosive action of the liquid which passes the screen.

Mounted upon each of the bars 6 is a saddle 8 of any suitable corrosion resisting metal, which is co-extensive in length with the bar 6 and is provided with recesses 9 which are adapted to receive and hold the edges of the plates 1. The saddles have downwardly extending flanges I 0 on both sides of the bar 6, and the flanges are formed to afford additional resistance to loading, that is to say, they relieve the bars 6 from all or a portion of the load. At intervals, the flanges I 0 are provided with lugs II projecting laterally therefrom and oppositely disposed.

A plurality of yokes I2 are provided with lugs I3 similar to the lugs II and are adapted to embrace the bar 6 so that the lugs I I and I3 are contiguous. Bolts I 4 are adapted to connect the lugs so that the saddles and yokes areV held in assembled relation on the bars 6.

The ease of assembling the structure is immediately apparent, and it is equally evident that the saddles not only aiford a rm support for the screen plates, but also materially strengthen the structure, prevent warping or buckling, and ensure the life of the screen beyond a period which would be practicable Where the entire load is carried by the bars 6. The improved supports may be used advantageously in initial construction, thus ensuring long life of the screens. They may be utilized also for replacement where the bars 6 have deteriorated in use, since the saddles afford a sufficient support for the screens and will hold them in proper alignment even though the bars6 may not be in sufficiently good condition to otherwise support the screen plates.

The structure as described is simple, effective, and relatively inexpensive. It affords numerous advantages not heretofore available in apparatus intended for the purpose described.

Various changes may be made in the details of construction and arrangement of the parts, without departing from the invention orsacricing any of the advantages thereof.

I claim: Y

1. A screen plate support comprising a bar, a saddle adapted to hold the edges of the screens extending lengthwise of the bar and engaging the upper edge thereof, spaced yokes engaging the lower edge of the bar and means for securing the yokes to the saddle.

2. A screen plate support comprising a bar, a saddle adapted to hold the edges of the screens extending lengthwise of the bar and engaging the upper edge thereof, spaced yokes engagingA the lower edge of the bar and means for securing the yokes to the saddle, including contiguous lugs on the saddle and yokes and fastening means engaging the lugs.

3. A screen plate support comprising a bar, a saddle adapted to hold the edges of the screens extending lengthwise of the bar and engaging the upper edge thereof, spaced yokes engaging the lower edge of the bar and means for securing the yokes to the saddle, including contiguous lugs on the saddle and yokes and bolts engaging the lugs.

4. A screen plate support comprising an elongated saddle adapted to hold the edges of the screen, spaced yokes and means for securing the spaced yokes to the saddle.

5. A screen plate support comprising an elon'- gated saddle adapted to hold the edges of the screen, spaced yokes and means for securing the spaced yokes to the saddle, including contiguous lugs on the saddle and yokes and fastening 5 means engaging the lugs. Y

6. A screen plate support comprising an elongated saddle adapted to hold the edges of the screen, spaced yokes and means for securing the spaced yokes to the saddle, including contiguous lugs on the saddle and yokes and bolts engaging the lugs.

GEORGE CLAUSEN. 

